X9409

OBSOLETE PRODUCT DATASHEET NO RECOMMENDED REPLACEMENT contact our Technical Support Center at X9409 1-888-INTERSIL or www.intersil.com/tsc FN8192 Low Noise/Low Power/2-Wire Bus Quad Digitally Controlled Potentiometers Rev.6.00 (XDCP) Sep 3, 2015 The X9409 integrates 4 digitally controlled potentiometers (XDCP) on a monolithic CMOS integrated microcircuit. The digitally controlled potentiometer is implemented using 63 resistive elements in a series array. Between each element are tap points connected to the wiper terminal through switches. The position of the wiper on the array is controlled by the user through the 2-wire bus interface. Each potentiometer has associated with it a volatile Wiper Counter Register (WCR) and 4 nonvolatile Data Registers (DR0:DR3) that can be directly written to and read by the user. The contents of the WCR controls the position of the wiper on the resistor array through the switches. Power-up recalls the contents of DR0 to the WCR. The XDCP can be used as a three-terminal potentiometer or as a two-terminal variable resistor in a wide variety of applications including control, parameter adjustments and signal processing. Features Four potentiometers per package 64 resistor taps 2-wire serial interface for write, read and transfer operations of the potentiometer 50Ω wiper resistance, typical at 5V Four nonvolatile data registers for each potentiometer Nonvolatile storage of multiple wiper position Power-on recall. Loads sav...